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- # button.tcl --
- #
- # This file contains Tcl procedures used to manage Tk buttons.
- #
- # $Header: /user6/ouster/wish/library/RCS/button.tcl,v 1.9 93/07/01 13:41:53 ouster Exp $ SPRITE (Berkeley)
- #
- # Copyright (c) 1992-1993 The Regents of the University of California.
- # All rights reserved.
- #
- # Permission is hereby granted, without written agreement and without
- # license or royalty fees, to use, copy, modify, and distribute this
- # software and its documentation for any purpose, provided that the
- # above copyright notice and the following two paragraphs appear in
- # all copies of this software.
- #
- # IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
- # DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
- # OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
- # CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- #
- # THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
- # INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- # AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
- # ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
- # PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
- #
-
- # The procedure below is invoked when the mouse pointer enters a
- # button widget. It records the button we're in and changes the
- # state of the button to active unless the button is disabled.
-
- proc tk_butEnter w {
- global tk_priv tk_strictMotif
- if {[lindex [$w config -state] 4] != "disabled"} {
- if {!$tk_strictMotif} {
- $w config -state active
- }
- set tk_priv(window) $w
- }
- }
-
- # The procedure below is invoked when the mouse pointer leaves a
- # button widget. It changes the state of the button back to
- # inactive.
-
- proc tk_butLeave w {
- global tk_priv tk_strictMotif
- if {[lindex [$w config -state] 4] != "disabled"} {
- if {!$tk_strictMotif} {
- $w config -state normal
- }
- }
- set tk_priv(window) ""
- }
-
- # The procedure below is invoked when the mouse button is pressed in
- # a button/radiobutton/checkbutton widget. It records information
- # (a) to indicate that the mouse is in the button, and
- # (b) to save the button's relief so it can be restored later.
-
- proc tk_butDown w {
- global tk_priv
- set tk_priv(relief) [lindex [$w config -relief] 4]
- set tk_priv(buttonWindow) $w
- if {[lindex [$w config -state] 4] != "disabled"} {
- $w config -relief sunken
- }
- }
-
- # The procedure below is invoked when the mouse button is released
- # for a button/radiobutton/checkbutton widget. It restores the
- # button's relief and invokes the command as long as the mouse
- # hasn't left the button.
-
- proc tk_butUp w {
- global tk_priv
- if {$w == $tk_priv(buttonWindow)} {
- $w config -relief $tk_priv(relief)
- if {($w == $tk_priv(window))
- && ([lindex [$w config -state] 4] != "disabled")} {
- uplevel #0 [list $w invoke]
- }
- set tk_priv(buttonWindow) ""
- }
- }
-